Oil pump



E. W. DODGE Jan. 3, 1933.

? OIL PUMP Filed N0v.25. 1929 INVENTOR Eugene W Dodge BY ATIORNEX Patented Jan. 3, 1933 I UNITED STATES PATENT Fries EUGENE W. DODGE, F LONG; BEACH, CALIFORNIA OIL PUMP Application filed November 25, 1929. Serial No. 408,457.

This invention relates to a pump, particuably by being screwed thereon. A ball larly applicable to the pumping of oil wells housing 7 forms the lower member of the d th lik plunger, and this housing and the head 6 An object of my invention is to provide a are connected together bya perforated tubin W novel means whereby sand or sediment is kept 8 which screws into both the head and the agitated and prevented trompacking ti htly hous ng; A plurality of perforations 9 are in the lower part of the barrel or if any subpr vlded 1n the tubing 8 and the purpose of stance becomes tightly packed or solidified, these perforations will be further described. such substance will be broken up during the A fibrous or expandable metal packing 10 5 Operation f th pump fits around the perforated tubing 8 and be- Another object is to provide a novel means twee?) he head 6 and the housing 7. The whereby the standing valve is raised to drain P g fits/closely g st he lnside of the th pump d t bi barrel 4 thereby a tight seal for the plunger.

A further object is to provide a novel pack- The elght of'the llquid above the pump Wlll 5 1 means f th inner plunger h b a be exerted through the perforations 9 and more effective seal is provided for said p nd the p ing 10 outwardly plungen againstthe wall of the barrel As the pack- Other objects, advantages and features of 1ng'YeaTS7 W expand more 311.51 more the invention may appear from the accomy hhtllr has been p h y W 2 panying drawing, the subjoined detailed dethl'hughf' h 56811 t h this ar- 70 scription and the appended claims. Yahgemeht usual weal" In the P p W I th d i be compensated for, and there will be little Figure 1 i a fragmentary, longitudinal needfor replacement of .the plunger except sectional view of my pump. at Very q h lhtelfvalsi r H Fi 2 i a fragmentary id l ti A ball seat 11 is provided in the housing 7 V 1 f th pump and a ball check 12 rests on the seat. The

Referring more particularly to the purpose of this ball is to prevent the fluid ing, the numeral 1 indicates a bushing which h fiowlhg dowhwm'dly p the stahdlhg bushing is provided with threads at the up- Y h h also to ehhhle the p p to hit on a per end thereof to receive a cage or the like has up shrokhh Cage lgshrelw Oh t lower (not shown), said cage being usual and wellh of the houslhg 7 h h chalh H 13 sehured known in this type of pump. A tube 2screws to the lever of 111113 last named g A on to the lower end of the bushing 1 and de- Seat l5"ls'prm.rlded the o 3 and b pends th f 16 rests on this last named seat. This ball A standing valve shoe 3 of any usual and and Seat form hhesthhdlhg Y v 85 well-known construction is provided at the A whshhhhcage h? Shoe 3 and lower end of the pump, and this shoe fits into is phovlded Wlth P h' of lhwa-rdly a member at the bottom of the tubing, all of thhdlhg fingers .18 Whlch' are adaptedto which will be readily understood by those g the ban h the Cage 13 lhlsed 40 skilled in the art. A barrel 4 is secured to W111 befurthel' descrlbed- The Chalh 14 1S 90 the upper end of the shoe 3 and rises a con- Secured to the h h end of the g 17 and siderable distance above the shoe. he barwhen the bushlhg 1 1S Pulled upwardly so as 4 i b t ti ll h same length as the to make the chain 1% taut through the medium tube 2. This last named tube fits over the of the p g a g 17 Win he raised thus barr 4 a d recipyocateg th as ill b removing the ball 16 from its seatand the further described. sand or other sediment will be allowed to A pipe 5 screws into the bushing 1 and exdrain downwardly through the seat 15. tends downwardly from the bushing into the A 0011 spring 19 bears against the top of barrel 4. An upper plunger head 6 is sethecagel'? and against a shoulder 20 in the cured to the lower end of the pipe 5, prefershoe 3, and the purpose of this spring is to normally hold the cage 17 downwardly so that the action of the ball 16 will not be interfered with. In order that the tubing may be drained when the ball 16 is lifted, provide slots 21 in the tube 2 which register with ports 22 in the barrel when the tube is in the elevated position which causes the chain 14 to tighten and raise the ball 16 oif- The fluid will then drain into the of its seat. pump below the cage 13, and will flow past the standing valve back into the casing.- Thls action Wlll also flush all of the sand or sediment from around the cage 17, and will thoroughly cleanse the pump. I

It will be evident from or the like.

the parted rods, I provide a means of locking the shoe 3 and the tube 2, which means consists of upstanding lugs 23 on the upper end of the shoe which lit into rests 24 in the bottom of the tube 2. p

he chain 14, during the normal operationof the pump hangs loosely in the barrel with several links coiling above the cage 17. The reciprocation of the plunger will move the chain constantly, thus breaking up or loosening any sand or sediment which might tend to settle and pack in the lower part of the pump. It will also be evident from the fore going description that my pump can be cleaned out by raising the standing valve ball from the inside and without requiring any additional tools to be run into the hole.

Having described my invention, I claim:

1. In a pump including a standing valve shoe, a barrel rising from the shoe, a plunger in the barrel, a ball check in said shoe, a washout cage in the shoe, engaging said ball, and a coiled spring bearing against the top of said washout cage whereby. the cage is urged downwardly, and a chain secured to said cage, and to the barrel, said washout cage being adapted to be lifted, against the tension of the spring, and simultaneously lift the ball check from its seat.

2. In a pump including a standing valve shoe, a seat positioned in the shoe, a ball resting on said seat, a washout cage above the seat, said cage engaging the ball, a shoulder in the shoe, a coil spring bearing against the shoulder and against the top of the washout cage, a barrel rising from the shoe, a plunger in the barrel, and a chain secured to the lower end of said plunger and to the washout cage whereby said cage may be lifted to unseat said ball.

In testimony whereof, I aifix my signature.

EUGENE IV. DODGE.

the foregoing de-' scription that my pump can be removed in its entirety from the well by reason of the chain 14. When the pump is removed, the chain acts as a garbot rod. If desired, the chain 1 1 may be any type of flexible metallic member, such as metal hose which telescopes, If the sucker rods should part, and if a fishing tool must be screwed on to 

